Files that have the APP file format are basically the executable programs that run on the Mac OS X platform. This file format is very much like the Windows EXE format, however, it is only used on the Mac systems instead of Windows based computers.
The Alphacam CAD/CAM computer aiding drafting application program also makes use of the APP file format. The CAD program is used for the Woodworking industry and is normally used in the manufacturing and designing of several furniture components. The APP file extension files that are used by this application is useful in storing the designs that are generated with the help of the program.
In addition to the problem described above, i.e. the lack of the appropriate application to support the .APP file, there may be several reasons that cause problems with opening and operation of the data format:
A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .APP file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .APP file, so download the update and check again.
If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:
It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.